Operation CHARM
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Pontiac
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1997
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Grand Prix V6-3.8L VIN K
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Shift Modulator
Shift Modulator
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Testing and Inspection
System Description
Vacuum Modulator Diagnosis
Vacuum Diaphragm Check
Atmospheric Leak Check
Load Check
Sleeve Alignment Check
Causes of Improper Vacuum at Modulator
Service and Repair
